Table 2.

Overall positional nystagmus prevalence with different positional nystagmus criteria

Positional nystagmus criteria	n (%)	CI
Minimum of 5 nystagmus beats in 5 consecutive seconds	55 (70.5)	[0.60;0.81]
Minimum of 3 nystagmus beats in 5 consecutive seconds	71 (91.0)	[0.85;0.97]
Minimum of 1 nystagmus beat during the total observation time	77 (98.7)	[0.96;1*]

^*Truncated from 1.01

Please note that the upper CI-value of “Minimum of 3 nystagmus beats in 5 consecutive seconds” is higher than the lower CI-value of “Minimum of 1 nystagmus beat during the total observation time”, indicating a possibility of the true value being the same for these criteria